hello all. I have the following script in which I want to compare a date that is assigned to a variable against one in a text box. This is what I have thus far:

Code:
 Function ChkDate()
var OldStart = "<%=ProjStart_Date%>";
var OldEnd = "<%=ProjEnd_Date%>";
	
  if (new Date(OldStart) - new Date(document.MainForm.txtNewStart.value) == 0) {
	alert("Your New Start Date is the same as the original.");
	return
	}
For some reason I can't seem to get it to work. Can anyone see anything wrong with this code?

Thanks,

Parallon